- http://www.linusakesson.net/programming/tty/
- https://superuser.com/questions/1264471/delete-entered-password-in-hidden-password-prompt-linux-with-shortcut
- https://unix.stackexchange.com/questions/50493/clear-erase-a-mistyped-invisible-password-on-a-shell-terminal-in-linux
- https://medium.com/@copyconstruct/the-method-to-epolls-madness-d9d2d6378642
- https://suchprogramming.com/epoll-in-3-easy-steps/
- https://idea.popcount.org/2017-02-20-epoll-is-fundamentally-broken-12/
- https://idea.popcount.org/2017-03-20-epoll-is-fundamentally-broken-22/
- https://github.com/angrave/SystemProgramming/wiki/Networking,-Part-7:-Nonblocking-I-O,-select(),-and-epoll